should you replace one plus two original scratch guard with glass?

[AC Question]

is it necessary to remove the original scratch guard and put the glass or should you put the glass over the scratch guard?

 

[belodion]

If the scratch guard is a plastic protector, remove it first.
See this for a reasonably good chance of getting a protector on well:
http://forums.androidcentral.com/showthread.php?t=529371